中文摘要：

为了研究加工状态对阳极氧化处理的影响,对7075高强铝合金进行了阳极氧化表面处理,利用金相显微镜、体视显微镜、扫描电镜（SEM）以及EDS观察和分析了氧化膜的微观组织、表面形貌和成分。结果表明铝合金表面析出相附近氧化膜出现中断、裂缝等缺陷;在铝合金表面有缺陷的部位,其生成的氧化膜厚度较薄,缺陷边缘尖角处氧化膜存有裂缝;通过增加表面光洁度,可以提高阳极氧化膜的质量,满足耐腐蚀性能的要求。由于表面存在缺陷,使得形成的氧化膜厚度不均匀或不完整,进而消弱了氧化膜对铝合金基材的保护作用。

英文摘要：

To study the effect of processing on anodization of 7075 high strength aluminum alloy,the aluminum anodic oxidation coating is prepared and the microstructure,surface morphology and the composition are analyzed by metallurgical microscope,stereomicroscope,scanning electron microscopy（SEM） and EDS.The results show that interruptions and cracks of the anodizing film appear in the surface near the precipitates;the anodizing film is thinner around the surface defects and there are cracks in the edge of sharp corners of it.It can improve the quality of the anodic film and meet the requirements of corrosion resistance by increase the surface degree of finish.The anodic oxidation coating is uneven or incomplete,which weakens the protection for the aluminum alloy substrate,due to the surface defect.